Assessing the contribution of micropores and mesopores from nitrogen adsorption on nanoporous carbons: Application to pore size analysis

被引：41

作者：

Choma, Jerzy ^{[1
]}

Jagiello, Jacek ^{[2
]}

Jaroniec, Mietek ^{[3
,4
]}

机构：

[1] Mil Univ Technol, Inst Chem, PL-00908 Warsaw, Poland

[2] Micromerit Instrument Corp, 4356 Commun Dr, Norcross, GA 30093 USA

[3] Kent State Univ, Dept Chem & Biochem, Kent, OH 44240 USA

[4] Kent State Univ, Adv Mat & Liquid Crystal Inst, Kent, OH 44240 USA

来源：

CARBON | 2021年 / 183卷

关键词：

Adsorption in micropores; Adsorption in mesopores; Nanoporous carbons; Nitrogen adsorption; Pore size distribution; SURFACE ENERGETICAL HETEROGENEITY; POROUS CARBON; MODEL;

D O I：

10.1016/j.carbon.2021.07.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Adsorption isotherms in micropores and mesopores are assessed from nitrogen adsorption isotherm measured on micro-mesoporous carbons and used to determine the micropore and mesopore size distributions. These carbons were obtained by self-assembly of phloroglucinol and formaldehyde in the presence of poly(ethylene oxide)-poly(propylene oxide) - poly(ethylene oxide) triblock copolymer (Pluronic F127) as a soft-template under acidic conditions and subjected to KOH activation. The template used afforded carbons with ordered cylindrical mesopores, while KOH activation enlarged their microporosity. The proposed method allows for the assessment of contributions arising from adsorption in micropores and mesopores, which can be beneficial for further development of pore size analysis of micro-mesoporous carbons. (C) 2021 Elsevier Ltd. All rights reserved.

引用

页码：150 / 157

页数：8

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